This transcript has been automatically generated and may not be 100% accurate.

Cynthia McFadden: Inside One World Trade Center

A tour from Chris Ward, the Port Authority executive overseeing the construction

Progress on World Trade Center Construction

Chris Ward tells Cynthia McFadden "this was never going to be an easy project."

The 'Survivor Staircase'

Staircase meant to make people think about that day and people who survived.

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